Texans join lucrative but risky hunt for emeralds
Tuesday, August 11, 2015

Houston-based company, Minería Texas Colombia, known as MTC, is now the only foreign mining company in the treacherous world of Colombia’s emerald trade — once responsible for about two-thirds of the world supply.
As the Americans try to reverse declining gemstone production, they also intend to revamp a feudal system of peasants and patrons by paying salaries and benefits and using modern machinery.
Source: Washington Post